分束器条件输出测量中的光子加减和薛定谔猫产生
Photon adding and subtracting and Schroedinger-cat generation in conditional output measurement on a beam splitter
摘要：
利用分束器的条件输出测量，研究了光子的加减问题。结果表明，对于各种类型的状态，相应的光子添加和减态可以制备。分析结果，特别强调光子添加和减压缩真空状态，这被发现代表两种不同类型的薛定谔猫类状态。讨论了真实光计数和Fock态制备的影响。
英文摘要：
The problem of photon adding and subtracting is studied, using conditional output measurement on a beam splitter. It is shown that for various classes of states the corresponding photon-added and -subtracted states can be prepared. Analytical results are presented, with special emphasis on photon-added and -subtracted squeezed vacuum states, which are found to represent two different types of Schroedinger-cat-like states. Effects of realistic photocounting and Fock-state preparation are discussed.
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